The Rev. Jesse Jackson shared his views Monday on a potential presidential run by former Secretary of State Hillary Clinton, and whether Vice President Joe Biden would be a challenging opponent for the 2016 Democratic nomination.

“If she runs, she will win,” Jackson told HuffPost Live. “The qualifications that she has … she is not just a name. She is a voice with authority.”

While Jackson praised Biden’s experience, he said any potential challenger from either party would “have their hands full” running against Clinton. When asked whether he was officially endorsing a Clinton presidential run, Jackson said that was “certainly my observation.”

Biden recently said he saw “no obvious reason” for him not to run for president in 2016. Clinton has not yet said whether she plans to run.